Introduction; Required Test Equipment For Generator Verification - CPI CMP 200 Series Service Manual

4
Acceptance Testing
4.1.0

INTRODUCTION

This section details acceptance testing, which verifies that the generator is performing within limits. It is
recommended that this be done whenever the generator is reconfigured, or component(s) are replaced
which may affect the X-ray output. Examples of such components are the X-ray tube, HT tank, console
board, generator control board, filament supply board, and the AEC board.
WARNING: 1. USE EXTREME CARE IN MEASURING HIGH VOLTAGES. ACCIDENTAL CONTACT MAY
CAUSE INJURY OR DEATH.
2. EVEN WITH THE GENERATOR SWITCHED OFF AT THE CONSOLE, MAINS VOLTAGE IS
STILL PRESENT INSIDE THE GENERATOR CABINET. THIS VOLTAGE IS EXTREMELY
DANGEROUS; USE EXTREME CAUTION.
3. THE ELECTROLYTIC CAPACITORS, LOCATED BESIDE THE HT TANK, PRESENT A
HAZARD FOR A MINIMUM OF 5 MINUTES AFTER THE POWER HAS BEEN SWITCHED
OFF. VERIFY THAT THESE CAPACITORS ARE DISCHARGED BEFORE SERVICING OR
TOUCHING ANY PARTS.
WARNING: THE PROCEDURES IN THIS CHAPTER REQUIRE THE PRODUCTION OF X-RAYS. TAKE
ALL SAFETY PRECAUTIONS TO PROTECT PERSONNEL FROM X-RADIATION.
WARNING: 1. ALWAYS ENSURE THAT THE EQUIPMENT UNDER TEST AND ALL ASSOCIATED TEST
EQUIPMENT IS PROPERLY GROUNDED.
2. ENSURE THAT THE HIGH VOLTAGE CABLES ARE INTACT / UNDAMAGED AND
PROPERLY CONNECTED BEFORE ATTEMPTING EXPOSURES.
ENSURE THAT THE FOLLOWING ITEMS ARE COMPLETED PRIOR TO PERFORMING THE
ACCEPTANCE TESTING:
•
The generator is interfaced to compatible room equipment, as noted on the product description \
compatibility statement in chapter 1.
•
The tube auto calibration has been done as per chapter 3C.
•
The receptors have been programmed as per chapter 3C.
•
If the installation has AEC, verify that all receptors have been calibrated as per chapter 3D.
•
Acceptance testing shall only be started after the installation is complete i.e. with the generator in the
final position and installed as per the previous chapters of this manual.
4.2.0

REQUIRED TEST EQUIPMENT FOR GENERATOR VERIFICATION.

•
kV measuring device such as a Dynalyzer (or equivalent).
•
Storage oscilloscope.
•
mA / mAs meter.
•
Radiation meter 0-10 mGy (0-1000 mR).
•
Lead diaphragm or equivalent to collimate the beam.
•
General purpose DVM.
•
Strobe or reed tachometer.
•
Current probe 0 to 20 amps AC.
•
A set of HVL filters.
•
Calculator.
Use and disclosure is subject to the restrictions on the title page of this CPI document.
Page 4-2
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CMP 200 X-Ray Generator Service Manual
CPI Canada Inc.
Ch # 901476-06 Rev. A